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Progress toward inexpensive endoscopic high-resolution common-path OCT

机译：廉价内窥镜高分辨率共通OCT的进展

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摘要

Presented in this work is our effort to develop a simple, inexpensive high resolution fiber-optic Optical Coherence Tomography. The approach is based on common-path Fourier Domain OCT (CP-FDOCT), which can lead to applications for both microsurgical tool control and high-resolution endoscopic imaging. The system utilizes a combination of standard fiber optic components and novel signal processing techniques in order to achieve high axial resolution and to simplify the system. High axial resolution is achieved by implementing the Enhanced Lee filter to reduce speckle noise in the OCT image and Richardson-Lucy deconvolution algorithm afterwards to suppress sidelobes induced by the system's point spread function. This also improves the lateral resolution. Utilizing the simple CP-FDOCT and this algorithm, using an onion as a sample, we have obtained images that have improved resolution and signal to noise ratio by 6dB.
机译：这项工作提出了我们开发简单，廉价的高分辨率光纤光学相干断层扫描技术的努力。该方法基于共通路径傅里叶域OCT（CP-FDOCT），可以导致显微外科手术工具控制和高分辨率内窥镜成像的应用。该系统结合了标准的光纤组件和新颖的信号处理技术，以实现较高的轴向分辨率并简化系统。通过实现增强型Lee滤波器来减少OCT图像中的斑点噪声，以及之后的Richardson-Lucy反卷积算法来抑制由系统的点扩散函数引起的旁瓣，可以实现较高的轴向分辨率。这也提高了横向分辨率。利用简单的CP-FDOCT和此算法，以洋葱为样本，我们获得了分辨率和信噪比提高了6dB的图像。

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